I some what agree with Anastasios. The fasts are not ends of themselves, but a means to an end. If they get lessend and moved around for the benefit of the faithful, then so what? (Now, doing the samething for reasons of fashion is totally different). There exists a diffenernce in fasting practices between the Greeks and Russians, so why not this one allowance?
Some advice that was given me years ago while I was still living at home, with non-Orthodox family, was to eat whatever they made, and to not make a show of fasting.